DESCRIPTION

Enter the realm of topological languages!

This module implements the Funge-98 specifications on a 2D field (also called Befunge). It can also work as a n-funge implementation (3D and more).

This Befunge-98 interpreters assumes the stack and Funge-Space cells of this implementation are 32 bits signed integers (I hope your os understand those integers). This means that the torus (or Cartesian Lahey-Space topology to be more precise) looks like the following:

PUBLIC METHODS

new( [params] )

BUGS

Although this module comes with a full set of tests, there may be subtle bugs remaining - or maybe I misinterpreted the Funge-98 specs. Please report any bugs or feature requests to "bug-language-befunge at rt.cpan.org", or through the web interface at <http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Language-Befunge>. I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.

Here is a list of known "bugs", coming from the specs:

o

About the 18th cell pushed by the y instruction: Funge specs just tell to push onto the stack the size of the stacks, but nothing is said about how user will retrieve the number of stacks.

o

About the load semantics. Once a library is loaded, the interpreter is to put onto the TOSS the fingerprint of the just-loaded library. But nothing is said if the fingerprint is bigger than the maximum cell width (here, 4 bytes). This means that libraries can't have a name bigger than 0x80000000, ie, more than four letters with the first one smaller than P (chr(80)).

Since perl is not so rigid, one can build libraries with more than four letters, but perl will issue a warning about non-portability of numbers greater than 0xffffffff.

ACKNOWLEDGEMENTS

I would like to thank Chris Pressey, creator of Befunge, who gave a whole new dimension to both coding and obfuscating.